US 12,244,171 B2 · Battery-ultracapacitor hybrid energy storage system architecture for mild-hybrid power systems

Abstract

A mild-hybrid energy storage system architecture is provided, comprising: a battery; an ultracapacitor connected in parallel with the battery; a passive battery pre-charge circuit connected between a terminal of the battery and a DC bus; a battery main contactor connected in parallel with the battery pre-charge circuit between the terminal of the battery and the DC bus; a passive ultracapacitor pre-charge circuit connected between a terminal of the ultracapacitor and the DC bus; an ultracapacitor main contactor connected in parallel with the ultracapacitor pre-charge circuit between the terminal of the ultracapacitor and the DC bus; and a control module configured to independently control operation of the battery pre-charge circuit, the battery main contactor, the ultracapacitor pre-charge circuit and the ultracapacitor main contactor.

Claims20

Dependent claims

A mild hybrid energy storage system architecture, the mild hybrid energy storage system architecture comprising:

a battery;
an ultracapacitor connected in parallel with the battery;
a battery main contactor connected to a terminal of the battery;
a passive battery pre-charge circuit connected in parallel across the battery main contactor;
an ultracapacitor main contactor connected to a terminal of the ultracapacitor;
and
a passive ultracapacitor pre-charge circuit connected in parallel to the ultracapacitor main contactor;
a control module configured to:
provide engine start-up functions by directing the battery to defer pre-charge of the ultracapacitor;
and
isolate the ultracapacitor by opening both an ultracapacitor pre-charge switch of the passive ultracapacitor pre-charge circuit and the ultracapacitor main contactor at engine shutdown.

8 more elements

A non-transitory computer-readable medium storing a set of instructions for controlling an engine for a mild hybrid energy storage system architecture that employs a DC bus connected to dedicated pre-charge circuits and main contactors for a battery and an ultracapacitor connected in parallel, the set of instructions comprising:

one or more instructions that, when executed by one or more processors of a device, cause the device to:
provide engine start-up functions by directing the battery to defer pre-charge of the ultracapacitor;
and
isolate the ultracapacitor by opening both an ultracapacitor pre-charge switch of a passive ultracapacitor pre-charge circuit and an ultracapacitor main contactor at engine shutdown.

1 more element

Dependencies are inferred from the claim text.

Battery-ultracapacitor hybrid energy storage system architecture for mild-hybrid power systems

Life of this patent

Battery-ultracapacitor hybrid energy storage system architecture for mild-hybrid power systems

Life of this patent

Abstract

Claims20